Intra-plate deformation: a quantitative study of the faults activated by the 1978 Thessaloniki earthquakes

Abstract

THE Thessaloniki region suffered from damaging seismic activity during the summer of 1978. During both major shocks that took place on the 24 May (M, 5.5) and 20 June (M, 6.5), manifestations of faulting could be observed in the epicentral areas. They showed that the continental crust is stretching out in this region. Measurement of slips on the active faults make it possible to compute the direction of traction (165°N) in the crust. These active faults show close kinematic similarities to previously neotectonically defined faults of Recent Quaternary age (after 400,000 yr) within the same region. Thus, study of Recent neotectonic faults often gives a correct prediction of the direction of possible slipping on faults which could be activated by earthquakes in the same region. We show here that a quantitative study of active and neotectonic faults demonstrates that in this intracontinental situation faulting deformation is satisfactorily explained with a model of continuous deformation.

Access options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1

    Faugeres, L. thesis, Univ. Paris 4 (1975).

  2. 2

    McKenzie, D. Geophys. J. R. astr. Soc., 55, 217–254 (1978).

    ADS  Article  Google Scholar 

  3. 3

    Mercier, J. L. VI Colloquium of the Geol. of Aegean Region, Athens (1977); Bull. Soc. géol. France 7, 19, 3, 633 (1977).

    Google Scholar 

  4. 4

    Bott, M. H. P. Geol. Mag. 96, 2, 109 (1959).

    ADS  Article  Google Scholar 

  5. 5

    Carey, E. & Brünier, B. C.r. hebd. Séanc. Acad. sci., Paris D279, 891 (1974).

    Google Scholar 

  6. 6

    Ritsema, A. R. Proceedings of seminar of the seismotectonic map of the Balkan Region, Skopje (1974).

    Google Scholar 

  7. 7

    McKenzie, D. Geophys. J. R. astr. Soc. 30, 109 (1972).

    ADS  Article  Google Scholar 

  8. 8

    Papazachos, B. C. & Delibassis, N. D. Tectonophysics 7 3, 231 (1969).

    ADS  Article  Google Scholar 

  9. 9

    Mercier, J. L., Carey, E., Philip, H. & Sorel, D. Bull. Soc. géol. France 7, 18, 2, 159 (1976).

    Google Scholar 

  10. 10

    Tapponnier, P. & Molnar, P. Nature 264, 319 (1976).

    ADS  Article  Google Scholar 

  11. 11

    Tapponnier, P. Bull. Soc. géol. France 7, 19, 3, 437 (1977).

    Google Scholar 

Download references

Author information

Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

MERCIER, J., MOUYARIS, N., SIMEAKIS, C. et al. Intra-plate deformation: a quantitative study of the faults activated by the 1978 Thessaloniki earthquakes. Nature 278, 45–48 (1979). https://doi.org/10.1038/278045a0

Download citation

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.